Re: randn newbie question

[Joe Koski]

OK, just to be sure, for us big-endian users of octave-forge and
octave-2.1.64, who don't normally use randn, and don't want to recompile
right now, the "quick fix" would be to rename the octave-forge randn.oct
file, for example:
 /usr/local/libexec/octave/2.1.64/site/oct/powerpc-apple-darwin7.7.0/octave-
forge/randn.oct? 

This would prevent us from accidentally using the octave-forge randn a
couple of months from now because we forgot about the problem. If execution
time then becomes a problem, we could apply the patch and re-make and
reinstall octave-forge (or get a newer version of octave/octave-forge).

Any other changes that I'm forgetting?

Joe


on 2/6/05 12:32 PM, Hamish Allan at address@hidden wrote:

> Thank you to everyone who replied. Removing the octave-forge version of
> randn() worked, as did reinstating it after applying Paul's patch.
> 
> Cheers,
> Hamish
> 
> On Feb 6, 2005, at 16:36, Paul Kienzle wrote:
> 
>> On Feb 5, 2005, at 11:55 AM, Hamish Allan wrote:
>> 
>>> Why does:
>>> 
>>> plot(randn(2,100)', '+')
>>> 
>>> which looks like this in Matlab:
>>> 
>>> http://igor.gold.ac.uk/~map01ra/matlab_randn.jpeg
>>> 
>>> look like this in Octave:
>>> 
>>> http://igor.gold.ac.uk/~map01ra/octave_randn.jpeg
>>> 
>>> ???
>> 
>> The reason is that I messed up the test for X86 architecture
>> in randmtzig.c, and you are compiling little endian rather than
>> big endian architecture.
>> 
>> I've fixed this in CVS.  Before making a new release, I want
>> to put some distributional tests around the random number
>> generator code so nothing so egregious happens again.
>> 
>> Please try the attached patch.
>> 
>> - Paul
> 
> 




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